mosquito racket schematic
I believe that Hariprasad is looking for a schematic for a device which is a cross between a bug zapper and a tennis racket. It has two sets of wire mesh grids attached to a tennis racket type frame. The electronics keep the grids at a high voltage potential between them. When you swat a bug with this device, it gets electrocuted by the high voltage.
You can see one disassembled at:
**broken link removed**
If you want some laughs, you can google "electric fly swatter video" There are numerous dumb people sticking their fingers or tongues on the electric grids.
The two challenges to this design is getting reasonable battery life and limiting the current to safe levels so people do not hurt themselves.